Merge branch 'bugfix/fix-padding-constraints' into feature/refactor-directory
Merge branch 'bugfix/make-indices-arrays' into feature/refactor-directory
Move documents into `sphinx` directory.

Turn off warnings->errors temporarily.
Move everything around.
Restructure the document.
Put all the examples in a top-level section.
Remove `cd sphinx` from .travis.yml
Merge pull request #100 from enthought/feature/refactor-directory

Refactor the directory and the document